IHSG Plunges 8.35% in a Week: Beware of Heavily Pressured Sectors

The Jakarta Composite Index (IHSG) closed Friday’s trading session on a strong note at the Indonesia Stock Exchange (BEI) on May 22, 2026. The benchmark index successfully gained 67.10 points, or 1.10%, to reach 6,162.04. This positive performance saw 449 stocks advance, while 251 declined and 118 remained stagnant.

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Despite this daily surge, the IHSG still registered a cumulative decline of 8.35% over the past week, highlighting a period of underlying market weakness leading up to Friday’s rally.

According to the Pilarmas Research Team, the basic materials sector emerged as the top performer on the final trading day of the week, surging by an impressive 6.85%. In stark contrast, the financial sector found itself at the bottom, recording a decline of 0.28%.

“The transaction value today reached Rp 17.90 trillion, and the IHSG experienced a weekly weakening of 8.3%,” the Pilarmas Team noted in their research report, which was received by Kontan on Friday, May 22, 2026. This substantial trading volume underscored the market’s dynamic activity.

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Throughout the day, the LQ45 index, representing 45 highly liquid stocks, also showed significant strengthening. Among the dominant gainers were PT Merdeka Copper Gold Tbk (MDKA), PT Vale Indonesia Tbk (INCO), PT Darma Henwa Tbk (DEWA), PT Bumi Resources Tbk (BUMI), and PT Merdeka Battery Materials Tbk (MBMA).

Conversely, shares that predominantly led the decline included AMMN, CUAN, ASII, TLKM, and EMTK. These stocks faced selling pressure even as the broader market rebounded.

Focusing on the broader market, the largest individual stock gains on Friday, May 22, 2026, were observed in DFAM, CTBN, PBSA, TALF, and MDKA, with MDKA reaffirming its strong presence among top performers.

Meanwhile, the largest stock declines were seen in PGLI, ASPR, BOBA, LCKM, and APIC, indicating specific areas of market underperformance.

Further insights came from Alrich Paskalis Tambolang, an Equity Research Analyst at Phintraco Sekuritas. He noted that nearly all sectors closed in the green by week’s end, with the sole exception of the financial sector, which corrected by 0.38%. This divergence in performance highlighted sector-specific market dynamics.

Tambolang further elaborated on the strong performance of key sectors, with the energy sector climbing 6.85% and the basic materials sector rising 4.84% during this session. This significant uptick was reportedly fueled by circulating rumors that Indonesia would delay the full implementation of its state-controlled coal and other strategic commodity export policies until January 1, 2027.

“This postponement is believed to provide a longer transition period for both exporters and international buyers to adjust to the policy changes,” Tambolang explained to Kontan on Friday, May 22, 2026. The potential delay offered a much-needed breath of relief for commodity-related businesses, underpinning the impressive gains in these critical sectors.

Summary

The Jakarta Composite Index (IHSG) closed positively on Friday, May 22, 2026, gaining 1.10% to reach 6,162.04 points. Despite this daily increase, the IHSG registered a significant cumulative decline of 8.35% over the past week. Daily transaction value reached Rp 17.90 trillion, indicating active market participation.

On Friday, the basic materials sector emerged as the top performer, surging 6.85%, while the financial sector was the sole decliner, correcting by 0.28%. This strong performance in commodity-related sectors was reportedly fueled by rumors of Indonesia delaying the full implementation of state-controlled commodity export policies until January 1, 2027. This postponement is expected to provide a longer transition period for exporters and international buyers.

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